Exemple #1
0
/**
 * check_captcha()
 *
 * @param string $captcha
 * @param boolean $timer (on|off)(true|false)
 * @return boolean
 */
function check_captcha($captcha, $timer = true)
{
    global $error_captcha;
    $captcha = htmlspecialchars(stripslashes(trim($captcha)));
    if (empty($captcha)) {
        $error_captcha = ERROR_MESSAGE_CAPTCHA;
        remove_cookie();
        return false;
    } elseif (isset($_COOKIE['Captcha'])) {
        list($Hash, $Time) = explode('.', $_COOKIE['Captcha']);
        if (md5(SALTING . $captcha . $_SERVER['REMOTE_ADDR'] . $Time) != $Hash) {
            $error_captcha = ERROR_MESSAGE_CAPTCHA_INVALID;
            remove_cookie();
            return false;
        } elseif (time() - COOKIE_TIMER * 60 > $Time && $timer) {
            $error_captcha = ERROR_MESSAGE_CAPTCHA_TIMED_OUT;
            remove_cookie();
            return false;
        }
    } else {
        $error_captcha = ERROR_MESSAGE_CAPTCHA_COOKIE;
        return false;
    }
    return true;
}
Exemple #2
0
 static function logout()
 {
     remove_cookie('user');
 }
 /**
  * Destroys the session, removing all data stored in this session and
  * removing any reference to this session.
  */
 public function session_destroy()
 {
     # Remove cookie
     remove_cookie($this->sign($this->session->id, $this->session->salt));
     # Remove session from database
     $this->session->delete();
 }